A 64-year-old woman from Sterling Heights, Mich., died Tuesday diving on Benwood Reef with her husband and six others offshore Key Largo, according to a press release from Sheriff's Office spokeswoman Deputy Becky Herrin.

The captain of the commercial dive boat Silent World 4 said the divers were under about 40 minutes, between 2 and 3 p.m., when Donna Hartson surfaced and signaled for help. By the time the boat got there, she was unresponsive, he said. She was pulled aboard and CPR begun as the boat headed for shore, where they were met by paramedics. Hartson was taken to Mariner's Hospital, where she was pronounced dead, Herrin said.

An autopsy will be done to determine the cause of death.

KEY WEST

Not-guilty plea in threats case

A Summerland Key man pleaded not guilty on Feb. 8 to threatening to go on a killing spree at a Key West office building and then kill himself, according to federal court records.

William Duncan Savage faces five years in prison if convicted. Prosecutors allege Savage was upset over the garnishment of his Navy retirement income for child support when he called a federal worker in Ohio on Dec. 10 and made the threats. Savage allegedly said he would "[expletive] kill people," and "I'm going to kill five people tomorrow [in a Key West office building]," records state.

He was charged with transmitting, in interstate commerce, a communication containing a threat to another, and subsequently released on $75,000 bail. No trial date has been set.

BIG PINE KEY

Free guided trail walks offered

The public is welcome to join guided trail walks at the National Key Deer Refuge. Participants meet at the refuge's Visitor Center, in the Winn-Dixie shopping plaza, to get maps to the walk site and caravan to the trail.

The caravan to the scheduled trail leaves promptly at 8:10 a.m., organizers say. Each walk ends by 11 a.m. Bring a hat, sunscreen, bug spray, comfortable walking shoes, water, binoculars or spotting scope, field guides, and dress appropriately for the weather. A limited supply of loaner field guides and binoculars are available.

Walks on different trails are scheduled for this Friday, March 6 and 13, April 5 and 27. A bike ride on Sugarloaf Key will be offered April 5. For more information, contact Kristie Killam at 305-872-0774 or kristie_killam@fws.gov.